64533625 has 32 divisors (see below), whose sum is σ = 87639552. Its totient is φ = 47160000.

The previous prime is 64533619. The next prime is 64533641. The reversal of 64533625 is 52633546.

It is not a de Polignac number, because 64533625 - 2⁵ = 64533593 is a prime.

Its product of digits (64800) is a multiple of the sum of its prime divisors (432).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245244 + ... + 245506.

It is an arithmetic number, because the mean of its divisors is an integer number (2738736).

Almost surely, 2^64533625 is an apocalyptic number.

64533625 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64533625 is a deficient number, since it is larger than the sum of its proper divisors (23105927).

64533625 is a wasteful number, since it uses less digits than its factorization.

64533625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 432 counting only the distinct ones).

The product of its digits is 64800, while the sum is 34.

The square root of 64533625 is about 8033.2823304052. The cubic root of 64533625 is about 401.1086431869.

The spelling of 64533625 in words is "sixty-four million, five hundred thirty-three thousand, six hundred twenty-five".